Materials Literature
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A class of self-assembling peptide nanofiber scaffolds has been shown to be an excellent biological material for 3-dimension cell culture and stimulating cell migration into the scaffold, as well as for repairing tissue defects in animals. We report here the development of several peptide nanofiber scaffolds designed…
Because of Klein tunneling, electrostatic potentials are unable to confine Dirac electrons. We show that it is possible to confine massless Dirac fermions in a monolayer graphene sheet by inhomogeneous magnetic fields. This allows one to design mesoscopic structures in graphene by magnetic barriers, e.g., quantum dots…
Owing to its superior tribological and mechanical properties with corrosion resistance, biocompatibility, and hemocompatibility, diamond-like carbon (DLC) has emerged as a promising material for biomedical applications. DLC films with various atomic bond structures and compositions are finding places in orthopedic, ca…
Biosynthesis of silver and gold nanoparticles by novel sundried Cinnamomum camphora leaf, Huang, Jiale, Li, Qingbiao, Sun, Daohua, Lu, Yinghua, Su, Yuanbo, Yang, Xin, Wang, Huixuan, Wang, Yuanpeng, Shao, Wenyao, He, Ning, Hong, Jinqing, Chen, Cuixue
Strained La0.8Ba0.2MnO3 thin films on SrTiO3 (100) substrate are grown by an off-axis sputtering technique. It is found that the ferromagnetic temperature TC increases for thinner films. Secondary ion mass spectroscopy indicates that Sr diffuses partially into the film, making it structurally nonuniform. The region cl…
In the paper, a new nonlinear left-handed transmission line (NLHTL) that incorporates arrays of Josephson junctions (JJs) is proposed. The nonlinearity of the newly developed Josephson left-handed transmission line (JLHTL) is due to the highly nonlinear nature of the JJs that provide the shunt inductances required to…
Negative index of refraction materials (NIMs) were first postulated by Veselago in 1968 and have recently been realised using structures formed with rings and wires deposited on printed circuit boards. The proof of the existence of negative index of refraction was established using a Snell's law experiment with a…
Ultraviolet (UV) embossed alignment layer for the flexible liquid crystal display (LCD) was fabricated to prevent problems encountered with the thermal treatment of the rubbing process on the plastic substrate. The mechanical stability against bending deformation was achieved by a phase-separated polymer wall. In a be…
Abstract A new method has been developed to detect the formation of carbon–carbon bonds by Diels–Alder reactions based on the fluorescence quenching of conjugated polymers. Conjugated copolymers containing various amounts of functional furan pendant groups (PFP–F) have been synthesized and characterized. A maleimide g…
This work investigates the electronic and ferromagnetic properties of Zn1−xCoxO nanorods using x-ray absorption, x-ray magnetic circular dichroism, and scanning photoelectron microscopy methods. The magnetic moment of Co ions in Zn1−xCoxO nanorods is found greatly reduced relative to that of the Co metal. The intensit…
Bestens konjugiert: Die neuartigen Azoporphyrine (1,2-Bis(porphyrinyl)diazene) wurden durch kupferkatalysierte Kupplung primärer Amine hergestellt. Die Struktur von Azo(triphenylporphyrin) wurde röntgenographisch bestimmt (siehe Bild). Der Azo-Linker ist ideal geeignet, um die π-Konjugation der Porphyrinringe zu erwei…
Intergranular conduction in half metallic ${\mathrm{CrO}}_{2}$ is known to occur through a combination of spin dependent tunneling [driven by Coulomb blockade (CB) effects] together with certain spin independent (SI) hopping processes. We present evidence that in polycrystalline ${\mathrm{CrO}}_{2}$ with enhanced grai…
Glass fiber reinforced polymer (GRP) composites are attractive candidates for future combat vehicle armor systems. Due to their complex architecture, shock waves in GRP undergo geometric and material dispersion as well as attenuation with distance of shock wave propagation. In the present study a series of plate impac…
Chemische Chamäleons: Hochstabile supramolekulare Aggregate aus dendritischen Multischalenarchitekturen zeigen universelle Transportfähigkeiten für polare und unpolare Gastmoleküle und können sich an verschiedene Lösungsmittelumgebungen anpassen, von Toluol bis hin zu Wasser.
The authors fabricated diamond solution-gate field-effect transistors (SGFETs) with miniaturization of the channel length to 5μm by photolithography. The channel surface was directly functionalized with amine by ultraviolet irradiation in an ammonia gas for 4h and aminated diamond SGFETs were sensitive to pH by 40mV∕p…
A computer-aided method for the design of waveguide structures loaded with the arrays of metamaterial cells is described. Broadside coupled split ring resonators and Ω scatterers are chosen as the resonant metamaterial cells. By optimisation of the resonator geometry, the bandwidth of the transmission range below the…
Magnetoinductive waves propagating along a line consisting of two kinds of metamaterial elements are studied. Both elements are made up by the same metallic loop but are loaded by different capacitors resulting in different resonant frequencies. The dispersion characteristics are derived from phase and amplitude measu…
This study demonstrated the feasibility of introducing an avidin-biotin system to three-dimensional and highly porous scaffolds for the purpose of designing scaffolds that have binding affinity with bioactive molecules for various biomimetic modifications. Porous hybrid scaffolds composed of collagen and hyaluronic ac…
The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect.…
Fibroblasts can construct a hydrated collagen lattice to a tissue-like structure that is greatly influenced by initial culture conditions. The purpose of this study was to investigate the effects of cell concentration and collagen concentration on the contraction kinetics and mechanical properties of resultant endoten…